Question

The square root of a negative number can be expressed in

Real number
Rational number
Imaginary number
None of these​

Answer 1

The square root of a negative number can be expressed as an imaginary number. No square root can be taken of a negative number within the system of real numbers because squares of all real numbers are non-negative. The lack of real square roots for the negative numbers can be used to expand the real number system to the complex numbers, by postulating the imaginary unit i, which is one of the square roots of −1.

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Answer 2

Answer:

None of these

Step-by-step explanation:

Zero has one square root which is 0. Negative numbers don't have real square roots since a square is either positive or 0. The square roots of numbers that are not a perfect square are members of the irrational numbers. This means that they can't be written as the quotient of two integers.